@mixin material-shadow($level: 1){
    @if $level == 1 {
        box-shadow: 0 3px 1px -2px rgba(0,0,0,.14),0 2px 2px 0 rgba(0,0,0,.098),0 1px 5px 0 rgba(0,0,0,.084);
    }
    @else if $level == 2 {
        box-shadow: 0 2px 4px -1px rgba(0,0,0,.14),0 4px 5px 0 rgba(0,0,0,.098),0 1px 10px 0 rgba(0,0,0,.084);
    }
    @else if $level == 3 {
        box-shadow: 0 3px 5px -1px rgba(0,0,0,.14),0 6px 10px 0 rgba(0,0,0,.098),0 1px 18px 0 rgba(0,0,0,.084);
    }
    @else if $level == 4 {
        box-shadow: 0 5px 5px -3px rgba(0,0,0,.14),0 8px 10px 1px rgba(0,0,0,.098),0 3px 14px 2px rgba(0,0,0,.084);
    }
    @else { // $level == 5
        box-shadow: 0 8px 10px -5px rgba(0,0,0,.14),0 16px 24px 2px rgba(0,0,0,.098),0 6px 30px 5px rgba(0,0,0,.084);
    }
}
